Collecting and separating apparatus



Mar. 13, 1923. V 1,448,6Q6.

C. E, TETLEY. COLLECTINGAND SEPARATING APPARATUS.

ORIGINAL FILED JULY 10. l9l 9.

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WITNESS:

Patented Mar. 13, 1923.

NET TBS NT to.

CHARLES EDWIN TETLEY, OF PITTSBU'RGH, PENNSYLVANIA, ASSIGNOR TO JAMES A.

FINLEY, OF PITTSBURGH, PENNSYLVANIA.

COLLECTING AND SEPARATING APPARATUS.

Application filed July 10, 1919, Serial Nol 309,931. Renewed December 8, 1922.

T 0 all whom it may concern:

Be it known that 1, CHARLES EDWIN TE'r- LEY, a resident of Pittsburgh, in the county of Allegheny-and State of Pennsylvania, have invented a new and useful Improvement in Collecting and Separating Apparatus, of which the following is a specification.

This invention relates to collecting and separating apparatus, and particularly to what are known as cyclone separators for separating finely divided or pulverized material from air. The object of the invention is to provide a new and improved separator which is suitable for use with all classes of material, which is eflicient in operation and practically completely separates all of the solid material from the air, and which is of simple construction and can be operated at low cost.

The invention comprises the construction and arrangement of parts hereinafter described and claimed. 4

In the drawings, which represent one embodiment of the invention, Fig. 1 illustrates the separating device in sectional elevation and connected to a pulverizing or comminuting apparatus; Fig. 2. is a detail sectional elevation on a larger scale showing the arrangement of the baflles; and Fig. 3 is in part a plan view and in part a horizontal section on the line AA, Fig. 1, the pulverizing apparatus being omitted.

In the drawings, the separating device is shown as connected toa pulverizing or comminuting apparatus, which may be of any suitable type but is shown of the construction illustrated and claimed in my co-pending application for pulverizing or comminuting apparatus of even date herewith, Serial No. 309,932. Said apparatus comprises a series of drums 1 which communicate in succession with each other and in eachl of which is located a rolling grinding or comminuting member,'such as a ba11. 2. Each drum isprovided with an annular gear 3 towhich is connected a companion driving gear (not shown),'for rotating the drums independently of each other to cause the balls 2 to roll over and pulverize the material. The last drum of the series communicates with a receiving conduit 4, which as illustrated is an elbow-shaped member leading upwardly to a smaller'conduit 5 communicating with the suction end of a fan or pump 6 driven in any suitable manner, such as by a motor 7. In the upwardly extending arm of the elbow 4 is a shallow funnel 8 of smaller diameter than the elbow 4, so that the air and material carried thereby pass upwardly around the periphery of said funnel. The funnel communicates with a downwardly inclined pipe or conduit 9 whose lower end is open within the last drum 1 of the series. The upper end of the elbow .4 is slightly conical and secured thereto, around the opening to conduit 5, is one or more baflles 8 which-will arrest heavy particles and cause them to fall into the funnel 8. The suction produced by the fan 6 is just suflicient to lift the finely divided particles of material, the heavy particles dropping back through the elbow 4 to the space within the drum 1*. Any heavy particles of material which may happen to be carried upwardly through theelbow 4 drop into the funnel 8 and are'carried back through the conduit 9 to the drum 1 to be reground to finer condition. It will, of course, be understood that the grinding or pulverizing apparatus shown is merely illustrative of one form of such apparatus with which the present invention may be used and is not to be understood as restricting the invention. The material carried by the conduit 5 to the fan 6 is delivered by a conduit 5 to the dust collecting and separating apparatus. This apparatus comprises a hollow casing having inner and outer walls 9 and 10 forming an annular space 11 therebetween which is closed at its upper end by a horizontal wall 12 and is open at its lower end, as at 13. The upper portions of said walls are cylindrical and the lower portions flare downwardly so that the total area of the passage 11 increases downwardly toward its discharge end. The conduit 5 enters the upper cylindrical portion of the passage 11 tangentially, as shown in Fig. 3. thus causing the dust laden air to have a spiral or whirling movement downwardly in the passage 11. Below the lower end of the inner wall 9 the outer wall 10 is continued in the form of a'funnel 14, which serves as a hopper for the finely divided material which is discharged. through an opening 15 in the bottom of said funnel to a bin or reservoir 16 which is provided at intervals on its cover or roof portion with standards or sup ports 17 for the upper portion of the apparatus. One of said standards is preferably of which are provided with aligned openings to receive a rod 19 provided with a head 20 on its upper end and a collar 21 below the lowerarm 18. Said rod 19 extends downwardly to a point convenient tothe floor where it is provided with a handle 22. By reciprocating the rod 19 the head 20 and collar 21 strike blows against the arms 18 and jar the entire apparatus for shaking off any finely divided material lodged therein so that it falls into the receiving hopper 14 and downwardly therefrom into the bin 16. This operation is performed at such intervals as may be required.

The inner wall 9 of the device forms a passage 23 through which the air flows to the upper portion of the apparatus and in which the finely divided or pulverized material is completely separated therefrom. Said passage is open at its upper end and its lower conical portion is filled with a series of annular baffles 24, each of which is of inverted V-shape in cross section, said baffles being formed of annular flaring bands or hoops riveted to each other, as shown in Fig. 2, and supported each one upon the next above by straps 25, the upper hoop being riveted directly to the inner wall 9, as shown at 26. The baflies are spaced apart both vertically and horizontally and are preferably also in staggered arran ement, each one lying directly beneath t e space between the next two adjacent baffles directly above, so that said bafiles completely cover the outer portion of the area of the passage 23. The finely divided material carried by the air is trapped in the annular inverted V-shaped baflles 24 and collects until it forms masses heavy enough to fall downwardly against the rising air current, to the receiving hopper 14. Usually thebafiies free themselves of collected or trapped material, but'at intervals the entire apparatus can be jarred or shaken with the rod 19 so as to clean the bafiles. v I

The rising air current through the passage 23 meets a cone-shaped cover cone 25 having a depending cylindrical wall 26 therein, which cone and wall act as at trap to collect and stop any particles of material which might be carried out from the passage 23,

so that such material will fall back into the separator. The cone 25 is. supported by upright legs 27, which are metal straps fastened to the outer wall 10 of the casing, and this spacing of the cone above the casing provides anannular outlet opening for the cleaned air.

The dust laden air enters the upper portion of the passage 11 tangentially and passes downwardly through said passage with a spiral or whirling motion until it enters the upper portion of the hopper 14, the large area of which causes the air to expand and-greatly reduce its velocity so that most of the comminuted material carried by the air drops by gravity into said hopper. The centrifugal action of the whirling movement of the air downwardly through passage 11 causes much of the material carried thereby to adhere to the outer wall 10 and slide down into the hopper. The air, then at a much reduced veloclty, rises slowly upwardly through the passage 23 and passes between the numerous inverted V-shaped baflies 24, which present a very large surface area and serve to gather any fine particles of material still contained in the air, which particles adhere to said battles and eventually fall down into the hopper 14 as already explained.

The device shown and described may be used for separating any finely divided material from air, such as finely pulverized cement, coal, ores, paint materials or other substances, or may even be used as a dust collector, for furnaces, or with vacuum cleaners or other like devices for collecting sawdust or shavings from wood working ma-. chines. It is very eflicient in operation and removes substantially all of the solid material from the air.

I claim:

1. A separator for finely divided material comprising an outer casing, an inner casing extending from the top of the outer casing part Way down in the same, the lower end of the outer casing forming a receiving hopper, a supply conduit communicating with the space between said casings, said space being open at its lower end and communicating with the space within the inner casing, an air outlet from the upper end of the inner casing, and a series of annular inverted trough-shaped separating baflles located in different horizontal planes within the inner casing.

2. A separator for finely divided material comprising an outer casing, an inner casing extending from the top of the outer casing part way down in the same, both of said casings increasing in diameter downwardly, the lower end of the outer casing forming a receiving hopper, a supply conduit communicating with the space between said casings, said space being open at its lower end and communicating with the space within the inner casing, an air outlet from the upper end of the inner casing, and a series'of annular inverted trough shaped separating bafiles within the inner casing.

3. A separator for finely "divided mate rial comprising an outer casing, an inner casing extending from the top of the outer supply conduit v communicating with the space between said casings and connected tangentially thereto so as to produce a whirling motion of the air within the space between said casings, said space being open.

at its lower end and cou'imunicating with the spacewithin the inner casing,an air outlet from the upper end of the inner casing, and a. series of annular inverted troughshaped bafiies spaced-apart within the inner casing.

4. A separator for finely divided material comprising an outer casing, an inner casing extending from the top of the outer casing part way down in the same, a supply conduit communicating with the space be tween said casings said space being open at its lower end and communicating with the space within the inner casing, an air outlet from the upper end of the inner casing, and a plurality of annular inverted trough shaped separating bafiies located at difierent levels and of different diameters suspended within the inner casing. I

5. A separator for finely divided material comprising an outer casing, an inner casing extending from the top of the outer casing part way down in the same, both of said casings increasing in diameter downwardly, a supply conduit communicating with the space between said casings, said space being open at its lower end and communicating with the space within the inner casing, an air outlet from the upper end of the inner casing, and a plurality of annular inverted trough shaped bafiies located at difi'erent levels and of different diameters within the inner casing, the ones of smaller diameter being suspended from the ones of next larger diameter. 7

6. A separator for finely divided material comprising an outer casing, an inner casing extending from the top of the outer casing part way down in the same, a supply conduit communicating with the space between said casings, said space being open at its lower end and communicating with the space within the inner casing, an air outlet from the upper end of the inner casing, and a plurality of annular baflies arranged in a plurality of series, the upper baflle of each series being suspended from the inner casing and the other baflies of each series being successively suspended from the preceeding one of that series.

7. In a separator for finely divided material, a vertical casing through which dust laden air moves upwardly, and baflies therein comprising plates secured by their upper edges to the casing walls and having their lower edges spaced from the casing walls,

and other bafiies comprising a pair of plates.

suspended by their upper edges from the lower edge of first named baflles and spaced therefrom and having their lower edges spaced apart thereby providing within said casing a series of annular inverted V-shaped pockets. Y

8. In a separator for finely divided material, a vertical casing through which dust laden air moves upwardly, and battles therein comprising plates secured by their upper edges to the casing walls and having their lower edges spaced from said walls, inverted V-shaped baflies, or straps connecting the apices of said V-shaped baffles to the lower edges of each of the first named baflies and serving to space the same therefrom.-

In testimony whereof, I have hereunto set my hand. 7

CHARLES EDWIN T'ETLEY. Witness:

G. G. TRILL. 

